Cheat Engine

[kot1990]

Anyone who has created a bot for mmorpg games? I want an explanation about how a bot works and what I have to learn to do it. I am not newbie. I understand C/C++ classes/pointers and all that stuff and a little winapi and how to write/read from memory. I don't ask for any hack/cheat for specific game.

What is really happening when I target something or attacking/using skill etc.? Is there a way to force the application do that?

[Jorg hi]

"The logic of bots is as endless as the logic on programming." A simple way to do what you said would be to constantly read the value of your 'health' and everytime your health decreases you heal yourself by using SetCursor ex...

But a counter the first quote is "Logic is only limited by ability". So practice.

[rooski]

what kind of bot ? could be something like an autominer or autoattack, or something simpler like auto potter.

[kot1990]

No autopot is crap, I mean like attacking,targeting etc. I thought maybe sending messages to the window, would that work?, but don't know what to send. Oh and the game I am trying to do is not packed exe or any other encryptions, it is all open! I even tried to use a debugger and it worked.

EDIT: How the game knows about my actions? I tried SendInput() and it works, but I don't want to send clicks or keyboard stuff, I want to make the action "run" like target or move without touching the input,, what I want to say is that I want the client to make the action directly.

EDIT2: I thought about that every control in the game has a unique id that would identify its action to the client, and the client keeps looping till it finds one of these actions and then runs it. If I find the location the game keeps that value and just writeprocessmemory on it, wouldn't that affect the game to start acting?

[AtheistCrusader]

You can hook the Attack(ID)? (or others) function, and call it yourself.

[tombana]

I have a bot for an mmorpg. What I do is basically have a thread that loops and does:

- check if it needs to use food
- check if it needs to get buffs
- attack every monster on the target list
- if the targetlist is empty (all monsters on the list died) then add new monsters
- repeat

I use packet editing. So I receive the packets from the server and parse them to get the monster info and so on. And to attack I send packets etc.

[kot1990]

[tombana]

[kot1990]

[AtheistCrusader]

The packets are encrypted, you could however try decrypting them.

[kot1990]

I don't think so, I compared 2 of the sent packets doing the same action and the only difference is on the TCP header, the Sequence number and the checksum, these always change. The data and all other remain the same. So how can I send the next valid packet? I tried on many applications that use UDP and not TCP, and it worked because UDP is not using sequence numbers for its packets.

EDIT: I even tried to customize the packet so the next packet number will be the correct, and also corrected the checksum(tried that on mIRC channel) and it failed

EDIT2: I think I should start doing some winsock programming

[SBAOM]

Artificial intelligence, man, A.I. You have to create a code that imitates as much as possible H.I (Human intelligence or whatever). For instance, when you see an enemy in a MMORPG, you attack them with the proper attack, maybe, cause you want to kill'im, right? So you have to make a code that acts like a "Human Mind". If you are developing a MMORPG, you probably have some kind of "Class" (OOP) for a character, right? Each character has got an index. An array of characters, that is it. You should create some kind of NPC class which is a clone of the other one, but is used in a different way. That is without receiving orders from any I.P but the server I.P in itself.
Hope that helped, I didn't really ever created a bot or npc, but I'm very sure about what I told you above.

[kot1990]

[Slugsnack]

during the sniffing part, assuming you are hooking send()/recv(), a socket descriptor is specified

[kot1990]